[{"data":1,"prerenderedAt":164},["ShallowReactive",2],{"page:/zh-TW/date-to-timestamp":3},{"id":4,"title":5,"body":6,"description":140,"extension":141,"eyebrow":142,"faq":143,"locale":153,"meta":154,"navigation":155,"pageType":156,"path":157,"related":158,"seo":159,"stem":162,"__hash__":163},"pages/zh-TW/date-to-timestamp.md","日期轉 Unix 時間戳",{"type":7,"value":8,"toc":130},"minimark",[9,13,22,33,37,44,47,50,53,56,59,118,121],[10,11,12],"h2",{"id":12},"從日曆日期得到唯一時刻",[14,15,16,17,21],"p",{},"轉換前請選擇 UTC 或明確的 IANA 時區。輸入控制項採用年—月—日順序，避免 ",[18,19,20],"code",{},"03/04/26"," 在不同地區被解讀成不同日期。時區決定這個日曆時間對應哪個絕對時刻；只更換輸出單位不會改變時刻。",[14,23,24,25,28,29,32],{},"例如，臺北的 ",[18,26,27],{},"2026-01-01 08:00"," 與 UTC 的 ",[18,30,31],{},"2026-01-01 00:00"," 是同一時刻。若只儲存日期文字而沒有時區，就無法可靠還原這個關係。",[10,34,36],{"id":35},"秒毫秒與精度","秒、毫秒與精度",[14,38,39,40,43],{},"Unix 命令列工具與許多後端系統常用秒；JavaScript ",[18,41,42],{},"Date"," 原生採用毫秒；部分資料庫與事件管線使用微秒或奈秒。輸入日期只有毫秒精度時，選擇更細單位只會增加末尾零，不會創造新的量測精度。",[10,45,46],{"id":46},"日光節約時間邊界",[14,48,49],{},"某些命名時區會在春季把時鐘向前撥，造成一段從未出現的本地時間；秋季向後撥時，一段本地時間會對應兩個不同 UTC 偏移。工具會拒絕不存在的時間，並在重複時間時顯示兩個候選時刻，避免靜默選錯。",[10,51,52],{"id":52},"如何操作這個工具",[14,54,55],{},"輸入日曆日期與鐘點，選擇當時觀察該鐘點的來源時區，再選輸出單位並按轉換。來源時區用於解讀輸入，不只是結果旁邊的標籤。",[10,57,58],{"id":58},"輸入與輸出範例",[60,61,62,75],"table",{},[63,64,65],"thead",{},[66,67,68,72],"tr",{},[69,70,71],"th",{},"輸入或設定",[69,73,74],{},"預期結果",[76,77,78,92,105],"tbody",{},[66,79,80,87],{},[81,82,83,86],"td",{},[18,84,85],{},"2023-11-14 22:13:20"," · UTC · s",[81,88,89],{},[18,90,91],{},"1700000000",[66,93,94,100],{},[81,95,96,99],{},[18,97,98],{},"2023-11-15 06:13:20"," · Asia/Shanghai · ms",[81,101,102],{},[18,103,104],{},"1700000000000",[66,106,107,113],{},[81,108,109,112],{},[18,110,111],{},"2023-11-14 22:13:20.123"," · UTC · ms",[81,114,115],{},[18,116,117],{},"1700000000123",[10,119,120],{"id":120},"使用結果前的檢查",[14,122,123,124,129],{},"日光節約時間調慢時鐘造成重複時間時，明確選擇較早或較晚偏移；跳過而不存在的鐘點會被拒絕。輸入有小數部分時整秒向下取整，選毫秒或更細單位可保留支援的精度。",[125,126,128],"a",{"href":127},"/zh-TW/guides/time-zones-and-dst/","日光節約時間範例","說明不存在時間與非法日期的差別。",{"title":131,"searchDepth":132,"depth":132,"links":133},"",2,[134,135,136,137,138,139],{"id":12,"depth":132,"text":12},{"id":35,"depth":132,"text":36},{"id":46,"depth":132,"text":46},{"id":52,"depth":132,"text":52},{"id":58,"depth":132,"text":58},{"id":120,"depth":132,"text":120},"將 UTC 或指定 IANA 時區中的日曆日期轉換為 Unix 秒、毫秒、微秒或奈秒。","md","Epoch 轉換 / 02",[144,147,150],{"question":145,"answer":146},"為什麼轉換日期時必須選擇輸入時區？","相同年月日與鐘點在不同時區對應不同的絕對時刻。明確指定輸入時區才能得到唯一且可重現的時間戳。",{"question":148,"answer":149},"日光節約時間切換時如何處理？","工具會拒絕春季撥快時不存在的本地時間；秋季撥慢造成同一時間出現兩次時，會列出兩個 UTC 偏移供你選擇。",{"question":151,"answer":152},"選擇微秒或奈秒會提高輸入精度嗎？","不會。日期控制項只有毫秒精度，更細單位只是把同一時刻換算為更大的整數並補零。","zh-TW",{},true,"tool","/zh-tw/date-to-timestamp",null,{"title":160,"description":161},"日期轉 Unix 時間戳 — 支援時區與日光節約時間","將 UTC 或 IANA 時區日期轉成 Unix 秒、毫秒、微秒或奈秒，並驗證日光節約時間缺口與重複時間。","zh-TW/date-to-timestamp","jecdjU35FNkIhA36urZfWZRepWJaKKV_yscPyV9VLOE",1792032486104]